JPH06345043A - Method and device to pour hazardous substance into container - Google Patents

Abstract

PURPOSE: To completely seal the whole device from the atmospheric air by opening a passage between a glove box and a drum container for packing and weighting operations, then closing an outlet after the packing, packing and sealing the deflated inner bag and outer bag in the drum container, and sealing the glove box outside of a chamber. CONSTITUTION: A drum container 49 is mounted at a lower side of a sealing device 3 of an upper glove box 1 on a weighting platform 6. The drum container 49 is sealed by inflating an upper ring flange 50 by an expandable seal 12. A passage between the glove box 1 and the drum container 49 is opened by this seal. The product is packed and weighted by opening the passage. An outlet is closed after the packing, the air in an inner bag 52 is deflated, the inner bag 52 and an outer bag 51 are packed and closed in the drum container 49, and the drum container 49 is sealed. Then the glove box 1 outside of the chamber for the drum container 49 is sealed lastly. Whereby the drum can be completely sealed from the atmospheric air in a weighting frame.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container for a hazardous substance to be packed, in which a substance to be injected under a clean room condition through a glove box, a lock chamber and a drum container is divided into a plurality of parts at an outlet of a manufacturing plant, particularly A method and device for injecting into a bag.

[0002]

2. Description of the Related Art A method of this kind and the associated plant are
European patent EP 521 252 by the same applicant
A1 or German patent DE 91 07 768 U. In this known injection plant,
There is a box on top of the other, with the upper box configured as a glove box to allow corresponding operations on the filler head to be performed under safe conditions.

It was also a feature of this earlier patent application that a second lower glove box was arranged in which a drum to be filled under the upper glove box was arranged with a filling bag disposed therein. .

[0004]

However, the use of two glove boxes, one on top of the other, makes the plant expensive and relatively difficult to operate. In addition, there is a non-sealable transition opening between the upper glove compartment and the lower glove compartment, which under certain conditions air in the drum and lower chamber is transferred through this open transition opening to the upper glove compartment. However, it is associated with the drawback that it will contaminate the air in the upper chamber.

The object of the present invention is therefore to develop a method and a device of the abovementioned type in which an operationally reliable method is ensured with a low manufacturing cost of the device.

[0006]

To achieve the above object, one aspect of the present invention is that the material injected under clean room conditions through the upper glove box, the lock chamber and the drum container of a manufacturing plant. A method for injecting a hazardous substance into a container, which is divided into several parts at an outlet and packed, comprising: a) placing a drum container under the sealing device of the upper glove box on the weighing platform, and b) expanding. Seal the upper ring flange of the drum container by inflating the seal, c) open the passage between the glove box and the space with the drum container, and d) over the flange from the drum container in the glove box. Pull out the outer bag and close the bag, e) close the inner bag from the drum container at the outlet of the manufacturing plant, f) perform the filling and weighing operation, close the outlet after the filling is done, g) Bleeding the inner bag, h) packing the inner bag and then the outer bag into a drum container and closing it, and sealingly sealing the drum container; and i) sealing the glove box removed from the chamber for the drum container. The method for injecting a hazardous substance into a container is characterized in that

According to another aspect, the invention relates to a weighing platform provided under a glove box, a weighing frame as a component of a weighing device arranged on the weighing platform for a drum container; a glove box A device for sealing from; an opening between the glove box and the drum container acting as a fixed chamber which can be hermetically sealed; in the outer metering frame, contacting the upper ring flange of the drum container without the pressure forces associated with metering And an apparatus for performing the method of injecting a hazardous substance by means of a first surface consisting of an inner bag and an outer bag provided in a drum container.

The lower glove box is generally removable, and the drum itself functions as a fixed chamber by sealingly contacting a sealing device located under the upper glove box, thus providing a complete seal. Creating a controlled atmosphere is an essential feature of the present invention. By removing the lower glove box, all corresponding parts can be removed, making the present device substantially cheaper to manufacture.

A sealing device is provided in the transition region between the upper chamber (glove box) and the drum which is sealingly arranged on the lower side, the sealing device being provided with the seal via a glove box and a sealing ring. It is another essential feature of the present invention that it is essentially constituted by a rocking lid that opens the opening to or from the drum of, and closes it together with the closure.

In the previous patent application, there is no further description of the passage of air through the corresponding filter and fan to the glove box and the corresponding possibility of cleaning.
The essence of the method is that in a first step the drum is placed on the weighing platform below the sealing device on the upper glove box, then the upper flange of the drum is placed on a part of the frame which is placed on the weighing device. Formed and sealed with an inflatable seal that is metered by a metering device. In order to avoid errors in the weighing result, according to the invention, the weighing frame is sealed by a flexible ring tube in the direction towards the glove box, so that there is no force exerted by the weighing frame on the upper glove box.

Similarly, due to the arrangement of the inflatable seal applied in a force-locking and shape-locking relationship to the upper ring flange of the drum, it is a closed device mounted on the metering device. It is important that no forces result in weighing errors, since no external force is applied to the device. Thus, for the first time, it is possible to keep the drum sealingly in a weighing frame, which is arranged under the upper glove box via a flexible ring tube, and as a result the entire device is absolutely completely sealed from the atmosphere. Is achieved.

Another feature of the method is that, in one step,
An oscillating lid is actuated which selectively opens the lower opening of the glove compartment and closes it in the direction of the hermetically held drum. The subject matter of the invention is obtained not only from the subject matter of the individual claims, but also from the combination of the individual claims with one another. The details and features disclosed herein, including the abstract and especially the spatial structure shown in the drawings, are essential to the invention individually or in combination as long as they are novel compared to the prior art. Billed.

The present invention will now be described in more detail with reference to the drawings showing only one embodiment. Further features and advantages essential to the invention will now be apparent from the drawings and the description thereof.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT According to FIG. 1, the plant consists essentially of an upper glove box 1 with a lower opening 2 in a bottom plate 19, below the opening 2 a frame 4 above a weighing platform 6.
The sealing device 3 forming the part of is disposed. The glove box 1 for that part is placed on a frame 5 on the ground.

The frame 4 mounted on the weighing platform has a ground clearance 7, which is important to form part of the metering device itself. Liquid or particulate matter may be filled via a discharge valve 8 connected to a supply device not shown in more detail. The lower side of the discharge valve 8 may be arranged in the metering device 9, and the outlet of the metering device is guided to the glove box 1 via the filler head 10.

Part of the filler head 10 is a filler pipe 11 having an inflatable seal 12 which expands and contracts pneumatically on its outer periphery via a pipe 14. In addition, part of the filler head 10 is a sampling extraction connector 13
Through which the withdrawal from the bag to be filled by the pipe 16 can take place. Filler head 1
0 is connected to another pipe 15 for introducing an inert gas for inactivating the filler head 10.

The introduction of air into the glove box 1 is carried out by the air inlet filter 2 connected to the glove box 1 through the suction opening 26.
5 in the direction of the arrow 24. The air flowing in through the suction opening 26 is supplied to the front filter 17 and the main filter 1.
It is pulled out from the glove box 1 via 8. Filter 1
The air passing through 7, 18 is accumulated in the collecting chamber 19 and is discharged to the atmosphere through the pipe 20 and selectively through the air outlet filter 22, or is withdrawn through the fan 23 in the direction of the arrow 31. . Instead of the air outlet filter 22 connected to the pipe 21, the pipe 21 may be returned directly to the product collection chamber where the product is injected.

The filters 17 and 18 are the filler head 1
It is adapted to filter out the air passing through the pipe 16 from 0, while the additional filters 28, 29 filter the air circulating in the chamber itself via the suction opening 27 and the flap valve, which pipes it. Remove from 30. The inflow of air at the intake opening 26 and the outflow through the intake opening 27 creates a partial pressure in the glove compartment, which prevents contaminated air from leaving the glove compartment 1 into the ambient environment.

Further, there is a cleaning device in which the cleaning medium is introduced into the chamber through the pipe 32, and the glove box 1 is operated on the flexible hose 33 through the opening of the glove.
A spray gun 34 is arranged which can be aimed at all points inside. The drying medium is introduced into the chamber via the pipe 35. The bottom plate 69 is inclined towards one corner of the glove box 1 and defines a flush opening with the lower valve 36, through which the cleaning medium is removed.

In a normal state (initial state), the opening 2 between the glove box 1 and the empty frame 4 therebelow is hermetically sealed. For this reason, a rocking lid 38 is used which can be swung by the lever 37 in two different swiveling positions.
A seal ring 39, which does not yet have a sealing function in FIG. 1, is mounted on the swing lid 38. The sealing device 3 comprises the rocking lid 38 and an inflatable seal 40 which is arranged in the region of an outwardly opening flange 41 of U-shaped contour. A flexible ring tube 42 connected to the upper side of the frame 4 is hermetically mounted on the flange 41. A vertically downwardly inflatable second seal 43 is arranged on the frame 4. Seal 41,4
3 is supplied with air via pipes 47 and 48 and is withdrawn.

A proximity sensor 44 is arranged in the frame 4 in order to know whether or not there is a drum in the frame 4. Another proximity sensor 45 detects the turning position of the lever 37, that is, whether the swing lid 38 is in one or the other turning position. According to FIG. 2, the drum 49 is mounted on the weighing platform 6 and the seal 43 is inflated, so that the ring flange 50 of the drum is hermetically provided on the seal 43.

As explained at the beginning, this sealing does not change the weighing result, since the seal 43 is arranged on the frame 4 and the frame 4 is placed on the weighing platform 6. Therefore,
It is a self-contained device that is not supported by additional forces on the outside. The dead weight of the frame and seal 43 is compensated by taring the weighing device.

Inside the drum 49 are two bags, the outer bag 5.
1 and inner bag 52. Both are open. Lever 3
By the operation of 7, the rocking lid 38 on which the seal ring 39 is placed pivots to the positions 38 ', 39' and the opening 2 becomes free. The edge 53 of the outer bag is pulled up by the operator of the plant and laid down on the flange 41. Adjacent seal rings 39 are fitted as in FIG. 4, which tentatively determines its position 39 ′, so that the edge 53 of the outer bag 51.
Is fixed. According to FIG. 5, the inner bag 52 is pulled up and its edges are covered by the inflatable seal 12 forming part of the filler head 10.

The seal 12 is inflated via a pipe 14. According to FIG. 6, the inside of the inner bag 52 can be made inactive by introducing an inert gas into the inner bag 52 through the pipe 15, and the inert gas flows inside the bag in the direction of the arrow shown. Scavenging, pipe 16, filters 17, 18
And again via the fan 23.

The air supply of this inner bag 52 is merely optional and not necessary for all applications. Turning to FIG. 6 to FIG. 7, the weighing device is then tared to remove all the weight to be drawn. The actual filling work is started here, and the quantification device 9 moves the inner bag 5 in the direction of arrow 56.
When switched to 2, the injected material (product) flows out of the discharge valve 8 and is deposited at the bottom in the form of product 57. The air replaced by this filling operation is extracted in the direction of the arrow through the pipe 16 and can escape from the pipe 21. After the filling has taken place, the metering device signals that the inner bag 52 has been filled, so that the product flow from the discharge valve is stopped.

According to FIG. 8, the inner bag is first withdrawn via the extraction connector 13 before the bag closures 59, 60 have been applied. Therefore, the inner bag 52 is deflated, and the bag closures 59 and 60 are applied only when the inner bag 52 is deflated. Further, air is also extracted from the filler head 10 in the arrow direction. According to FIG. 9, the upper clamp 59
A cut is made between the lower closure 60 and the lower closure 60, with the result that the remaining part 61 of the bag is left on the filler head 10.

Then, the inner bag 52 is packed in the drum 49. According to FIG. 10, the inflatable seal 40 is deflated and the seal ring 39 is moved to its position 39 'again. Next, the outer bag 51 is closed by the bag closing tool 62. By operating the lever 37, the swing lid is closed,
The seal ring 39 is carried on its upper side. The seal 40 is inflated to apply the rocker lid 38, so that the opening 2 is hermetically sealed.

Then, according to FIG. 11, the seal 43 is deflated and, as a result, the ring flange 50 of the drum 49.
Is cleared, and the latter can be moved from the weighing platform 6 in the direction of arrow 63. The drum is then hermetically sealed by a clamp ring associated with the drum lid which is not shown in more detail.

The entire drum filling procedure is now described. FIG. 12 shows an example of the tank 12 in the state of the method of FIG. For FIG. 5, the filling of the first bag when the rest of the bag is not yet present is shown in FIG. 12, while the remaining part 61 of the bag left in the glove compartment 1 has been moved. Indicates whether or not For this reason, the remaining part 61 of the bag together with the deflated seal 12 has to be placed in the basket 46 arranged in the chamber and the inner bag 52 according to FIG. 5 is only attached to the filler head 10.

At the same time, according to FIG. 12, the remaining part 6 of the bag
In order to ensure that any product debris still remaining in position 1 or in the area of the filler head 10 will fall into the inner bag 52 and not into the gap between the inner bag 52 and the outer bag 51. In addition, the upper edge 64 of the inner bag 52 is the seal ring 3
Turned over on 9. FIG. 13 shows the cleaning stage of the whole plant, in which the cleaning medium is supplied via the pipe 33 and distributed by the spray gun 34 into the chamber. In this case, the filters 17, 18 are removed and, in each case, also the pipe parts 66, 67 which are connected to the corresponding pipes by the sterile clamp fastening glove box 1.

The cleaning medium flows through the valve 36 on the inclined bottom plate 69.
Flows into the sink opening above. The pipe 36 is connected to the outlet 65 by a valve. FIG. 14 shows the drying stage, in which a drying medium such as hot air, an inert gas or the like is introduced via a pipe 35 and distributed by spray gun 34 throughout glove box 1. In this case, when the fan 23 is activated, the dry air can be removed from the chamber via the pipe 20 and more air is drawn in via the pipe 26 in the direction of the arrow 24.

Thus, the essence of the invention lies in the novel stage of the method, in which the drum is mounted on a weighing device which is placed in open air, above which the seal is mounted on the underside of the glove compartment. A metering frame is arranged which is sealingly connected to the device. Another important step in the process is that the chamber has cleaning and drying means as well as a special air introduction, in which both the air from the filler head 10 and the air from the chamber itself are removed.

[Brief description of drawings]

1 is a simplified diagram of a plant according to the invention in a starting position. FIG.

FIG. 2 is a simplified diagram showing the plant after introducing and sealing the drum.

FIG. 3 is a simplified diagram showing the plant with the outer bag closed.

FIG. 4 is a simplified diagram showing a plant with an outer bag sealed.

FIG. 5 is a simplified diagram showing a plant with an inner bag having a seal attached thereto.

FIG. 6 is a simplified diagram showing a plant showing an inflator for an inner bag.

FIG. 7 is a simplified diagram showing a plant showing filling of an inner bag.

FIG. 8 is a simplified diagram showing a plant showing closure of an inner bag.

FIG. 9 is a simplified diagram showing the plant after disconnecting the connection between the upper and lower portions of the inner bag.

FIG. 10 is a simplified diagram showing the plant after introducing both bags into the drum.

FIG. 11 is a simplified diagram showing the plant after closing the opening in the glove box and removing the drum.

FIG. 12 is a simplified diagram showing a plant of another embodiment of FIG.

FIG. 13 is a simplified diagram showing a plant at a cleaning stage.

FIG. 14 is a simplified diagram showing the plant in the drying stage.

[Explanation of symbols]

1 Glove Box 2 Lower Opening 3 Sealing Device 4, 5 Frame 6 Weighing Stand 7 Ground Clearance 8 Discharge Valve 9 Metering Device 10 Filler Head 11 Feeler Pipe 12 Inflatable Seal 13 Extractor Connector 14, 15, 16, 20, 30, 32, 35, 47, 4
8 Pipe 17, 18, 28, 29 Filter 19 Collection chamber 22 Outlet pipe 23 Fan 26, 27 Suction opening 33 Hose 34 Spray gun 36 Valve 37 Lever 38 Swing lid 39 Seal ring 40, 43 Seal 41 Flange 42 Ring tube 44, 45 Proximity sensor 46 Basket 49 Drum 50 Ring flange 51 Outer bag 52 Inner bag 57 Product 59,60 Bag closure 61 Remaining part of bag 65 Outlet 69 Bottom plate

Claims (10)

[Claims] 1. A method for injecting a hazardous substance into a container, wherein the substance injected under clean room conditions through an upper glove box, a lock chamber and a drum container is divided into several parts and packed at an outlet of a manufacturing plant. A) the drum container is placed below the sealing device of the upper glove box on the weighing platform, b) the upper ring flange of the drum container is sealed by inflating the inflatable seal, and c) the glove box. Open the passage between the drum and the space with the drum container, d) pull the outer bag from the drum container over the flange in the glove box and close the bag, and e) from the drum container to the inner bag at the outlet of the manufacturing plant. F) Perform filling and weighing operations, close the outlet after filling, g) bleed the inner bag, h) fill the inner bag and then the outer bag into the drum container and close it. And, the drum vessel was hermetically sealed, i) vessel injection method of the dangerous substance, characterized in that consists of the step of hermetically sealed glove box out of the chamber for the drum container. 2. The injection method according to claim 1, wherein the inner bag is inactivated by an inert gas after being closed at the outlet of the manufacturing plant. 3. The injection according to claim 1, wherein after the filling operation is completed, the glove box is hermetically sealed and removed from the chamber for the drum container, and then the glove box cleaning operation is performed. Method. 4. The injection method according to claim 3, wherein the cleaning medium is sprayed into the glove box by a spray gun and extracted again through a replaceable filter. 5. The injection method according to claim 4, wherein the cleaning medium flows down through a special device. 6. The injection method according to claim 1, wherein a drying operation is added. 7. A weighing stand provided under the glove box, a weighing frame as a part of the weighing device placed on the weighing stand for the drum container, a device for sealing from the glove box; An opening to and from the drum container that functions as a fixed chamber that can be hermetically sealed, an inflatable seal in the outer metering frame that contacts the upper ring flange of the drum container without the pressure forces associated with metering, and the drum container An apparatus for performing the method of injecting a hazardous substance according to claim 1, comprising an inner bag and an outer bag provided inside. 8. The injection device according to claim 7, wherein the opening between the glove box and the drum container can be hermetically sealed via a swing lid. 9. The injection device according to claim 7, further comprising a device for introducing an inert gas. 10. The injection device according to claim 7, further comprising a glove box cleaning device including a spray nozzle for a liquid or gas cleaning medium, a withdrawal or draining means, and a drying device.